Final answer:
When traveling under 35 mph on a dry surface, the rule you should use is to maintain a safe following distance and be prepared to stop within the distance you can see ahead of you.
Step-by-step explanation:
When traveling under 35 mph on a dry surface, the rule you should use is to maintain a safe following distance and be prepared to stop within the distance you can see ahead of you. This means you should drive at a speed that allows you to stop safely within your line of sight, considering factors such as road conditions, visibility, and the distance to the vehicle in front of you. Additionally, it is important to obey all traffic laws and signs, including the posted speed limit.